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    • 3. 发明申请
    • Method and Apparatus for Processing Excavated Earth
    • 挖掘地球处理方法与装置
    • US20070272776A1
    • 2007-11-29
    • US10556676
    • 2004-05-13
    • Jurgen Schenk
    • Jurgen Schenk
    • B02C23/08B02C17/20
    • B09C1/08B02C13/20B09B3/0041Y02W30/58
    • According to the invention, a grinding operation is used to process excavated earth, excavated material, or any other mineral material of an indeterminate shape which is to be reused at a construction site. In the process, the excavated material as well as additional piece-type coarse material passes through the grinding machine. The powdered rock resulting from the comminuting of coarse material by means of suitable breaking and/or crushing operations is then used as additive for the excavated material, which is so-to-speak generated on location. This additive is suitable for regulating the moisture of the excavated earth as well as to cause a stabilization and hardening of same. The degree of drying and hardening can be adjusted through selecting the degree of grinding, for example by grinding the coarse components more or less fine, depending on the degree of moisture or the desired post-hardening. In addition, coarse components such as asphalt, construction waste material, concrete chunks, or natural stones can also be added to the excavated earth to generate the desired amounts of powdered rock during the comminuting operation.
    • 根据本发明,使用研磨操作来处理在施工现场重复使用的挖掘土,挖掘材料或任何其他不确定形状的矿物材料。 在此过程中,挖掘的材料以及附加的片式粗材料通过研磨机。 然后通过适当的破碎和/或破碎操作将粗粉碎粉碎产生的粉状岩石用作挖掘材料的添加剂,其在位置上被说出来。 该添加剂适用于调节开挖土壤的水分以及其稳定和硬化。 可以通过选择磨削程度来调节干燥和硬化的程度,例如通过根据水分的程度或所需的后固化,粗磨成分或多或少地研磨。 此外,也可以在挖掘的土壤中加入诸如沥青,建筑废料,混凝土块或天然石的粗糙组分,以在粉碎操作期间产生所需量的粉状岩石。
    • 10. 发明授权
    • Process for separating polyurethane hydrolyzates into polyether and
diamine
    • 将聚氨酯水解产物分离成聚醚和二胺的方法
    • US4399236A
    • 1983-08-16
    • US299418
    • 1981-09-04
    • Georg NiederdellmannNorbert RoemerJurgen SchenkHartmut HetzelErnst Grigat
    • Georg NiederdellmannNorbert RoemerJurgen SchenkHartmut HetzelErnst Grigat
    • C08G18/00C08G18/82C08J11/00C08J11/10C08J11/04C08G18/48
    • C08J11/10C08J2375/04Y02W30/702
    • The present invention is directed to a process for separating polyurethane hydrolyzates, preferably polyurethane foam hydrolyzates, into substantially amine-free foamable polyethers and diamines, comprising (a) (i) briefly expanding a hot polyurethane hydrolyzate obtained in a continuous screw extruder to normal pressure or in vacuo and, without using readily volatile components (ii) spraying said hydrolyzate directly into a tubular coil evaporator which is heated to 180.degree.-300.degree. C. and at the end of which a pressure of from 0.1 to 20 mbar is applied and (iii) separating a hydrolyzate containing less than 1% by weight of NH.sub.2 in a following cyclone from most of the diamine evaporated and all the solvent used, the diamine being separated from the solvent used in a following distillation column, optionally without any further heat input; (b) precipitating any diamine still present quantitatively in the form of its hydrochloride by introducing excess hydrogen chloride into the hydrolyzate, optionally diluted with inert solvents; and (c) the regenerated polyether obtained after removal by filtration of the precipitated amine salt being freed under reduced pressure from inert solvent and excess hydrogen chloride.
    • 本发明涉及将聚氨酯水解物(优选聚氨酯泡沫水解产物)分离成基本上不含胺的可发泡聚醚和二胺的方法,其包括(a)(i)将在连续螺杆挤出机中获得的热聚氨酯水解产物短暂膨胀至常压 或在真空中,并且不使用易挥发性组分(ii)将所述水解产物直接喷射到加热至180-300℃的管状线圈蒸发器中,并且其末端施加0.1至20mbar的压力, (iii)在以下旋风分离器中从大部分蒸发的二胺和所有使用的溶剂中分离含有小于1重量%的NH 2的水解产物,二胺与随后的蒸馏塔中使用的溶剂分离,任选没有任何进一步的热 输入 (b)通过将过量的氯化氢引入水解产物中,任选地用惰性溶剂稀释,沉淀出以其盐酸盐形式定量存在的任何二胺; 和(c)通过过滤除去沉淀的胺盐后得到的再生聚醚,在惰性溶剂和过量的氯化氢中减压除去。